In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Sequential C-O decarboxylative vinylation/C-H arylation of cyclic oxalates via a nickel-catalyzed multicomponent radical cascade, published in 2020, which mentions a compound: 29046-78-4, mainly applied to aryl methylcyclohexyl allyl carboxylate selective diastereoselective preparation; cyclic oxalate alkyne aryl bromide sequential decarboxylative vinylation arylation, Product Details of 29046-78-4.
A selective, sequential C-O decarboxylative vinylation/C-H arylation of cyclic oxalate derivatives enabled by visible-light photoredox/nickel dual catalysis was described. This protocol utilizes a multicomponent radical cascade process, i.e. decarboxylative vinylation/1,5-HAT/aryl cross-coupling, to achieve efficient, site-selective dual-functionalization of saturated cyclic hydrocarbons in one single operation. This synergistic protocol provided straightforward access to sp3-enriched scaffolds such as I [R = OPh, OAc, OBz, etc.; R1 = 4-CNC6H4, 4-MeC6H4, 2-pyridyl, etc.; X = CH2, O; Y = CH2, O, S, N-Boc, etc.] and an alternative retrosynthetic disconnection to diversely functionalized saturated ring systems from the simple starting materials.
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles